MAX606/MAX607 19-0459 Rev 1 1/99 Low-Profile, 5V/12V or Adjustable, Step-Up DC-DC Converters for Flash Memory/PCMCIA Cards General Description Features The MAX606/MAX607 are the smallest CMOS, step-up Lowest-Height Circuit (1.35mm max) DC-DC converters available for flash memory and PC 4% Regulated Output (5V, 12V, or Adjustable) (PCMCIA) cards. They switch at up to 1MHz, permitting 2 the entire circuit to fit in 0.25in , yet remain under Up to 180mA Load Current 1.35mm high to fit Type 1, 2, and 3 card standards. 1MHz Switching Frequency (MAX606) These devices operate from a 3V to 5.5V input and pro- vide a 4% accurate output that is preset to 5V or 12V, 1A Logic-Controlled Shutdown or adjustable from V to 12.5V. They can provide up to IN 3V to 5.5V Input Voltage Range 180mA of output current at 5V. The MAX606 switches at up to 1MHz and fits Type 1 Compact 8-Pin MAX Package (thinnest standard) flash memory and PCMCIA cards. It uses a thin, 1.19mm high, 5H inductor and small, 0.68F output capacitors. The entire circuit fits in 2 0.25in and is less than 1.35mm high. The MAX607 switches at up to 500kHz, fitting Type 2 and 3 cards, as well as hand-held devices where height requirements are not as critical. It uses less 2 Ordering Information board area than the MAX606, fitting in 0.16in , but requires 2.5mm of height. It also has a lower no-load PART TEMP. RANGE PIN-PACKAGE supply current than the MAX606. MAX606ESA -40C to +85C 8 SO Both devices use a unique control scheme that optimizes MAX606EUA -40C to +85C 8 MAX efficiency over all input and output voltages. Other fea- MAX607ESA -40C to +85C 8 SO tures include 1A logic-controlled shutdown and user- controlled soft-start to minimize inrush currents. MAX607EUA -40C to +85C 8 MAX The MAX606/MAX607 come in 8-pin MAX and SO packages. The MAX package uses half the board area of a standard 8-pin SO and has a maximum height of just 1.11mm. Applications PCMCIA Cards Memory Cards Typical Operating Circuit Single PCMCIA Slot Programming Digital Cameras INPUT +4.5V TO +5.5V Flash Memory Programming Hand-Held Equipment 0.68F 0.68F 0.1F 5H Pin Configuration OUTPUT IN 12V 90mA LX ON/OFF SHDN TOP VIEW 0.68F x 2 MAX606 FB OUT PGND 1 8 LX FB 2 7 OUT MAX606 GND SHDN 3 6 SS PGND MAX607 IN 4 5 GND SO/MAX Maxim Integrated Products 1 For free samples & the latest literature: Low-Profile, 5V/12V or Adjustable, Step-Up DC-DC Converters for Flash Memory/PCMCIA Cards ABSOLUTE MAXIMUM RATINGS IN to GND.................................................................-0.3V to +6V Continuous Power Dissipation (T = +70C) A LX, OUT to GND.....................................................-0.3V to +15V MAX (derate 4.10mW/C above +70C) ....................330mW PGND to GND.....................................................................0.3V SO (derate 5.88mW/C above +70C).........................471mW FB to GND ..................................................-0.3V to (V + 0.3V) Operating Temperature Range ...........................-40C to +85C CC SS, SHDN to GND ....................................................-0.3V to +6V Storage Temperature.......................................................+160C Lead Temperature (soldering, 10sec) .............................+300C Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (V = 3.3V, GND = PGND = FB = 0V, SHDN = IN, T = 0C to +85C, unless otherwise noted. Typical values are at T = +25C.) IN A A PARAMETER CONDITIONS MIN TYP MAX UNITS Supply Voltage 3.0 5.5 V Undervoltage Lockout Threshold 2.4 2.8 V 3V < V < 5V, FB = IN, I = 0 to 180mA 4.8 5.0 5.2 IN LOAD Output Voltage (Note 1) V 4.5V < V < 5.5V, FB = GND, I = 0 to 120mA 11.5 12.0 12.5 IN LOAD FB Regulation Setpoint 0.1V < V < (V - 0.1V) 1.96 2.00 2.04 V FB IN Adjustable Output Voltage Range 0.1V < V < (V - 0.1V) V 12.5 V FB IN IN Line Regulation V = 3V to 5.5V 0.5 % IN W Switch On-Resistance 0.4 1 Switch Off-Leakage V = 12V 10 A LX Switch Current Limit 0.7 1.1 A V = V , V = 150mV 30 45 60 SHDN IN SS SS Resistance kW V = V = 0 0.5 SHDN SS MAX606 250 500 Quiescent Supply Current V = 13V A OUT MAX607 150 300 Shutdown Quiescent Current V = 0, OUT = IN 0.01 10 A SHDN OUT Input Current V = 13V 80 A OUT MAX606 1.9 3.0 4.3 3V < V < 5.5V IN Switch On-Time Constant (K) s-A (t = K / V ) ON IN MAX607 3.8 6.0 8.6 2V < (V + 0.5V - V ) < 8V (see Pulse- OUT IN Switch Off-Time Ratio 0.3 0.7 Frequency-Modulation Control Scheme section) V = 3V 0.25V V SHDN Input Low Voltage IN IN SHDN Input High Voltage V = 5.5V 0.66V V IN IN SHDN Input Current V = 0 or V 1 A SHDN IN V = 3V to 5.5V. For V below this voltage, IN FB FB Input Low Voltage 0.1 V output regulates to 12V. V = 3V to 5.5V. For V above this voltage, IN FB FB Input High Voltage V - 0.1 V IN output regulates to 5V. FB Input Current V = 2.05V, V = 13V 200 nA FB OUT 2 MAX606/MAX607